Setelah kita membuat tampilan untuk login sekarang kita akan langsung ke proses selanjutnya.
public class proses_login extends AsyncTask {
private String url_proses_login = "//ip-kalian/proses_android/proses_login.php"; // link proses login di php
Context context;
ProgressDialog progressDialog;
Activity activity;
AlertDialog.Builder builder;
public proses_crud[Context context] {
this.context = context;
activity = [Activity] context;
}
@Override
protected void onPreExecute[] {
super.onPreExecute[];
builder = new AlertDialog.Builder[activity];
progressDialog = new ProgressDialog[context];
progressDialog.setMessage["Koneksi ke server..."];
progressDialog.setIndeterminate[true];
progressDialog.setCancelable[false];
progressDialog.show[];
}
@Override
protected String doInBackground[String... params] {
String method = params[0];
if [method.equals["Login"]]{
try {
URL url = new URL[url_proses_login];
HttpURLConnection connection = [HttpURLConnection] url.openConnection[];
connection.setRequestMethod["POST"];
connection.setDoOutput[true];
connection.setDoInput[true];
OutputStream outputStream = connection.getOutputStream[];
BufferedWriter bufferedWriter = new BufferedWriter[new OutputStreamWriter[outputStream, "UTF-8"]];
String username, password;
username = params[1];
password = params[2];
String data_login = URLEncoder.encode["username", "UTF-8"] + "=" + URLEncoder.encode[username, "UTF-8"] + "&" +
URLEncoder.encode["password", "UTF-8"] + "=" + URLEncoder.encode[password, "UTF-8"];
bufferedWriter.write[data_login];
bufferedWriter.flush[];
bufferedWriter.close[];
outputStream.close[];
InputStream inputStream = connection.getInputStream[];
BufferedReader bufferedReader = new BufferedReader[new InputStreamReader[inputStream]];
StringBuilder stringBuilder = new StringBuilder[];
String line = "";
while [[line = bufferedReader.readLine[]] != null]{
stringBuilder.append[line + "\n"];
}
connection.disconnect[];
Thread.sleep[10000];
return stringBuilder.toString[].trim[];
} catch [MalformedURLException e] {
e.printStackTrace[];
} catch [IOException e] {
e.printStackTrace[];
} catch [InterruptedException e] {
e.printStackTrace[];
}
}
return null;
}
@Override
protected void onPostExecute[String s] {
super.onPostExecute[s];
try {
JSONObject jsonObject = new JSONObject[s];
JSONArray jsonArray = jsonObject.getJSONArray["Server"];
JSONObject JO = jsonArray.getJSONObject[0];
String code = JO.getString["code"];
String message = JO.getString["pesan"];
if [code.equals["login_true"]]{
builder.setMessage[message];
builder.setPositiveButton["OK", new DialogInterface.OnClickListener[] {
@Override
public void onClick[DialogInterface dialogInterface, int i] {
progressDialog.dismiss[];
context.startActivity[new Intent[context, HomeActivity.class]];
}
}];
AlertDialog alertDialog = builder.create[];
alertDialog.show[];
}else if [code.equals["login_false"]]{
builder.setMessage[message];
builder.setPositiveButton["OK", new DialogInterface.OnClickListener[] {
@Override
public void onClick[DialogInterface dialogInterface, int i] {
progressDialog.dismiss[];
}
}];
AlertDialog alertDialog = builder.create[];
alertDialog.show[];
}
} catch [JSONException e] {
e.printStackTrace[];
}
}
}
package com.example.lenovo.myapplication;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import com.example.lenovo.myapplication.proses.proses_crud;
public class WelcomeActivity extends AppCompatActivity {
EditText username, password;
Button btn_login;
TextView yuk;
AlertDialog.Builder builder;
@Override
protected void onCreate[Bundle savedInstanceState] {
super.onCreate[savedInstanceState];
setContentView[R.layout.activity_welcome];
username = [EditText] findViewById[R.id.editText];
password = [EditText] findViewById[R.id.editText2];
btn_login = [Button] findViewById[R.id.button];
yuk = [TextView] findViewById[R.id.yuk_daftar];
yuk.setOnClickListener[new View.OnClickListener[] {
@Override
public void onClick[View v] {
Intent intent = new Intent[WelcomeActivity.this, FormRegister.class];
startActivity[intent];
}
}];
btn_login.setOnClickListener[new View.OnClickListener[] {
@Override
public void onClick[View v] {
if [username.getText[].toString[].equals[""]||password.getText[].toString[].equals[""]]{
builder = new AlertDialog.Builder[WelcomeActivity.this];
builder.setTitle["Warning..!"];
builder.setMessage["Your fill not input..!!"];
builder.setPositiveButton["OK", new DialogInterface.OnClickListener[] {
@Override
public void onClick[DialogInterface dialogInterface, int i] {
dialogInterface.dismiss[];
}
}];
AlertDialog alertDialog = builder.create[];
alertDialog.show[];
}
else {
proses_crud backgroundTask = new proses_crud[WelcomeActivity.this];
backgroundTask.execute["Login", username.getText[].toString[],password.getText[].toString[]];
}
}
}];
}
}